Total taking control



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TOTAL TAKING CONTROL Original Filed July 4, 1939 J72 Were/29,07- T/zoM-s 0; Me/zazn flitorney-i I 5 Sheets-Sheet s Patented July 5, 1949 TOTAL TAKING CONTROL Thomas 0. Mehan, Park Ridge, 111., assignor to Victor Adding Machine 00., Chicago, Ill., a corporation of Illinois Original application July 4, 1939, Serial No. 282,787. Divided and this application July 15, 1946, Serial No. 683,804

3 Claims.

My invention relates generally to adding machines, and more particularly to manually operated controls therefor, to determine the character of the operating cycle to be performed.

An object is to provide an improved control key which has a normal position and two operative positions, respectively, for causing the machine to execute totaling and subtotaling operations, and in which the numeral keys are released by movement of the key to either of said positions.

Other objects will appear from the following description, reference being had to the accompanying drawings, in which:

Fig. 1 is a fragmentary longitudinal vertical sectional view, looking toward the left, of theadding machine, showing particularly the transfer mechanism and the means for resetting the same;

Fig. 2 is a fragmentary longitudinal vertical sectional View of the left-hand portion of the machine, looking to the right;

Fig. 3 is a side elevational view of the signal printing segment;

Fig. 4 is a fragmentary sectional view taken on a vertical plane and looking to the left of the machine, showing the total and subtotal control key in total taking position;

Fig. 5 is a view similar to Fig. 4, showing the control key in subtotal taking position; and

Figs. 6 and 7 are enlarged longitudinal sectional views showing the accumulator operating mechanism and the controls therefor.

This application is a. division of my copending application Serial No. 282,787, filed July 4, 1939, which has since been abandoned.

Referring to Fig. 1, the adding machine is provided with a keyboard comprising a plurality of numeral keys IIJ having stems l I guided for vertical movement in slots formed in plates I2 and I4. Each of the key stems I I is provided with a cam projection I6 and a notch I8 for cooperation with a longitudinally slidable latch bar 2|] and a similarly movable actuator release bar 22, there being one bar and one bar 22 for each longitudinal row of keys. The bars 20 are notched to provide shoulders 24 for engagement with the cam projections I6, alternate shoulders 24 being on opposite edges of the bars 20. Similarly, shoulders 25 for engagement with the cam surfaces of the projections IE on the key stems are provided on the actuator release bar 22.

The bars 2! and 22 are resiliently held in their rearward positions by suitable springs, such as the spring 2| shown in Fig. 1, for holding one of the latching bars 20 in its rearward position.

When one of the keys II] is depressed, its camming projection I6 successively cams the bars 20 and 22 forwardly until the projection I6 of the key stem passes beneath the latching bar 2t, whereupon the spring operating the latter will move it into the notch I8 and thereby latch the key in depressed position in the customary manner. The strokes of the keys are limited by fixed rods 23, each of which passes through elongated slots 24' in the key stems I I of a transverse row. The keys, when released by the latch bars 20, are returned to their normal positions by coil springs 26 which extend through suitable openings in the key stems ll of a transverse row, are suitably anchored at their ends, and are supported intermediate longitudinal rows of keys by vertical separator plates 21 which also serve to join plates I2 and I4.

In a normal adding operation of the machine, the lower ends of such of the key stems I I as have been depressed, are adapted to form stops to limit the rearward travel of actuator slides 30 which are suitably guided for longitudinal movement and may be drawn rearwardly by springs 32 in the customary manner after the slides have been released.

It will be understood that there is a slide 30 for each denominational order of the numeral keys H3, each of these slides being connected by a plate 34 with an actuator 36, the actuators being mounted for longitudinal travel on a pair of rods 38, 39 which extend through elongated slots 40 and M, respectively, formed in the actuator, the actuators being suitably guided and spaced by combs t2 and 43. The actuator 36 for the highest denominational order is not connected to a slide and is therefore provided with a tension spring 44 for drawing it rearwardly (as will appear hereinafter) when a total or subtotal is taken.

The rearward end of each of the actuators 36 is provided with a rack 46 which is in mesh with a segmental pinion 48 formed on a type sector 50, the type sector having a row of type 52 hearing the type characters from 0 to 9 thereon.

The type segments 50 are mounted for rotation on a shaft 54 and adjacent each of these segments there is provided a sector gear 60, the teeth of which are adapted for engagement with accumulator pinions 66 mounted for rotation upon a shaft 68. Each of the segments 50 is connected to its associated gear by a tension spring 56, the extent relative movement of these parts under the influence of the spring being limited by the engagement of a sidewardly extending lug 51' on the segment 50 with the portion 58 of the gear 60. The shaft 68 is secured at its ends to a pair of similar arms pivoted on a rod 12 so that the accumulator pinions 66 may be swung into and out of engagement with the teeth of the gear sector 60. Each of the accumulator pinions has secured thereto a disc provided with a transfer cam tooth T4 and a disc 16 having a notch 11. The arms 10 are joined by a comb strip 80. The accumulator pinions 66, when in the normal position shown in Fig. 1, areheld from accidental rotation by a toothed strip 82 rigidly secured to the vertical frame plates 83 and 85 of the machine.

A comb plate 84, likewise rigidly secured to the frame plates, forms guides for transfer pawls 86,

pivoted on rod 81, and for pawl latches 88, pivotedon a rod 89. Springs 90 bias both the pawls 86 and their latches 88 :for clockwise rotation. At the rearward end of each transfer pawl 86 there is a projection 92 for engagement with its associated transfer cam tooth 14, a notch 95, and a stop projection 93 for engagement with a lug 94 punched and bent sidewardly from the sector gear 60 of the next higher denominational order. Thus when a transfer pawl 86 is tripped, spring 56 rotates the gear sector clockwise a distance sufiicient to cause its associated pinion 66 to be rotated through one-tenth of a revolution, thereby to effect the transfer or carry-over. A pawl 86 which has been tripped is held in tripped position by its latch 88, which swings clockwise when the pawl is tripped. Such movement is permitted since the comb 80 is raised when the accumulator pinions 66 are in mesh with the gear sectors 60.

The latches 88 are restored to normal position by the comb 80 as the accumulator is returned to normal position. A paWl 86 which has been tripped is held in tripped position by the lug 94 which then rests in the notch 95. pawls are permitted to return to normal position during the initial portion of the following cycle of operation by a plate 98 secured to a shaft I00. When the shaft I00 is rotated clockwise the plate 98 engages a projection I02 on each of the gear sectors 60 which has been operated to effect a transfer and rotates it counterclockwise sufficiently to withdraw its lug 94 from the notch 95 0f the transfer pawl 86, so that the latter may be swung back to its normal position by its. spring 90.

The shaft I00 is rotated clockwise by the mechanism best shown in Fig. 6. The shaft I00 has an arm I82 secured thereto, and this arm has awipe pawl I04 pivotally secured thereto by a shouldered rivet I06, the pawl being held in the position shown in Fig. 6 by a tension spring I08. The main operating shaft IIO' has a plate II2 rigidly secured thereto and the rearWardly extending finger of the wipe pawl I04 normally rests on a stud II4 which projects sidewardly from the plate I I2. Thus during the initial portionof an operating cycle, as the main shaft I I0 is rotated counterclockwise the stud II4 engages in the notch I I6 of the wipe pawl I04, and swings the pawl clockwise, thereby, through a togglelike action, moving the arm I02 and the shaft I00 clockwise. As soon as the stud II4 wipes past the pawl I04, the arm I02 and shaft I00 are returned to normal position by a spring II8 (Fig. 1), the return movement being limited by the engagement of the rearward end of arm I02 with a fixed stud I20. Near the end of the operating cycle the stud II6 wipes freely .past the pawl I04.

The tripped A restoring bail rod I22 extends through arcuate slots I24 formed in all of the type segments 50 and through similar slots I23 and I25 formed in the frame plates 83 and 85, respectively.

The right-hand end of the restoring bail rod I22 is secured to an arm I26 fixed to shaft 54 (Fig. 6) while the left-hand end thereof is secured to an arm I28 (Fig. 2) likewise fixed to the shaft 54 and having a segmental pinion I30 formed thereon, the latter meshing with a segmental gear I32 pivoted on a shaft I34. A blfurcated operating arm I36 is likewise pivoted on the shaft I34 and is riveted to the segmental gear I32.

An operating plate I38 is rigidly secured to the main operating shaft II 0 and carries a roller I46 which cooperates with the inwardly facing edges I42 and I43, as well as with the slot I44 in the bifurcated arm I36. It will be apparent that as the main shaft is rocked clockwise (Fig. 2) during the forward stroke of the operating handle, the roller I40 will not move the arm I36 until the roller engages in the notch I44, when it commences swinging the arm I36 counterclockwise, thereby rotating the shaft 54 clockwise (Fig. 2) and thus permitting such of the type segments '50 which are free to'move, to rotate counterclockwise (Fig. 1).

A repeat key B (Fig. 2) has a stem I46 pivoted on a fixed stud I48, and has an offset depending arm I50 having a sidewardly projecting stud I52, the latter extending through an arcuate slot I54 in the side frame plate, the slot being illustrated in phantom in Fig. 2.

The key stem I46 has a cam nose I56 which is engaged by a roller I58 on a detent arm I60. The detent arm I60 is pivoted on a stud I62 and the roller I58 is held in engagement with the wedge shaped nose I56 by a suitably anchored tension coil spring I64. When the repeat key is swung forwardly (clockwise Fig. 2), its depending offset arm I50 engages a sidewardly projecting lug I65 formed on a wipe pawl I68 pivoted on a pin I10 projecting sidewardly from a bail arm I12, the latter bein pivoted on a stud I14. A key release bail bar I16 is secured to the arm I12 and has its other endsecured to an arm I18 (Fig. '7) pivoted on a stud I80. The plate I38 (Fig. 2) carries a roller I82 for cooperation with the pivoted wipe pawl I68. During the forward operating stroke, the pin merely wipes past and pivots the pawl against the tension of its normalizing spring I84, but on the return stroke the roller I82 engages the forward edge of the wipe pawl and due to the overhanging lug I66 swings the bail arm I12 clockwise (Fig. 2), causing the bail bar I16- thereof to engage the rearwardly projecting ends of the slides 20 and 22, thereby releasing the depressed numeral keys just prior to the completion of the return stroke of the operating handle. When, however, the repeat key R is swung forwardly, its offset arm I50 engages the lug I66 and swings the wipe pawl I68 counterclockwise a sufficient distance to keep it out of the path of the roller I82 and thus prevents restoration of the set keys to normal position and permits a repeat operation.

A total key T has a stem I88 pivoted on a stud I90 (Figs. 4 and 5) and has an inverted U-shaped bracket !92 riveted thereto. The stem I88 has a V-shaped notch I94 formed therein for engagement by the point I95 of a key lock plate I96 which is pivoted on a fixed stud I98. The plate has a sidewa-rdly extending stud 200 which is adapted to be engaged by the edgev of a plate cam 202 fixed to the main shaft H and by the hook portion 204 of an arm 206 which is pivoted on the shaft H0 and is permitted but limited movement with respect to the cam plate 202 by virtue of having a pin 208 projecting sidewardly into an arcuate slot 2I0 formed in the plate 202.

A tension spring 2l2 has one end secured to the stud 208 and the other end secured to a stud 2I4 fixed to plate 202, and the arm 206 is thereby urged to move clockwise with respect to the plate 202 (Fig. 7). During the initial portion of the forward stroke of the operating handle, the cam plate 202, by engaging the stud 200, swings the lock plate I96 clockwise to cause its point I95 to enter into the notch I94 if the total key T is in normal position, or to engage the key stem surfaces directly above the notch when the key stem is swung counterclockwise as shown in Fig. 4, for a total taking operation, and engages the surface directly below the notch I94 when the total key T is swung rearwardly as shown in Fig. 5, for conditioning the machine for a subtotaling operation.

The right-hand accumulator supporting arm I0 has a stud 2I6 secured thereto and projecting through an opening 2I8 formed in an operating arm 220 which is pivoted on a fixed stud 222 and is urged clockwise by a suitably anchored tension spring 223. A double hook arm 224 is pivoted on the stud 256 and is connected to the operating arm 220 by a link 226. The operating arm 220 has an ofiset depending arm 22 8 formed integrally therewith and this arm carries a stud 230 which projects through a V-shaped slot formed in the depending arm 234 of bracket I92. When the total key T is. in normal position as shown in Fig. 6, the forward hook 236 of the arm 224 is in engagement with a stud 238 formed on a rocker plate 240, whereas when the key T is in its total taking position (Fig. 4) or in subtotal taking position (Fig. the rear hook 242 is engaged with a stud 244 likewise secured to the rocker plate 240. The rocker plate 240 also has a pair of sidewardly extending roller studs 246 and 24] which are adapted to be engaged by a double acting wipe pawl 248 pivoted on a stud 250 carried by the plate H2, and is biased to project radially outwardly with respect to the main shaft III! by a tension spring 252. Upon the forward operating stroke, the wipe pawl 243 engages stud 246 and swings the rocker plate 246 counterclockwise, thereby through the engagement of the hook 236 with the stud 238, moving the arm 224 and hence the accumulator supporting bail downwardly to disengage the accumulator pinions 66 from the segmental gears 60. Shortly after the commencement of the return stroke, the wipe pawl 248 engages the roller stud 241 and rocks the rocker plate 240 clockwise to bring the accumulator pinions into mesh with their segmental gears 50, thereby to cause the amounts set up in the keyboard to be added into the accumulator in the well known manner.

When the key T is swung forwardly for a total taking operation (Fig. 4), it swings the actuator plate 222 counterclockwise about its pivot 222 to the position shown in 4. This movement, through the link 226, causes the arm 224 to be shifted to the position in which its hook 242 engages the stud 244. When the wipe pawl, during the initial portion of the forward stroke, engages the stud 246 and swings the rocker plate counterclockwise, it will therefore raise the arm 224 and thereby bring the accumulator pinions into mesh with their segmental gears 60, thereby causing the 76 V-slOt 232.

movement of the actuators to be limited by the engagement of the zero stop hook portion 92 (Fig. l) with the transfer cam teeth I4 of the accumulator and permit taking of a total in the usual manner.

At the beginning of the return stroke of the operating handle, the wipe pawl 240, by engagement with the roller stud 241, causes disengagement of the accumulator pinions so that they remain in cleared or zero position.

When the key T is swung rearwardly (clockwise) to the position in which it is shown in Fig. 5 for a subtotal operation, the operating arm 220 is swung to the same position as it assumes in the total taking position, and the parts operate in the manner above described except that at the beginning of the return stroke the wipe pawl 248 is prevented from engaging the roller stud 241 by virtue of the fact that an arm 2% engages a stud 258 on the wipe pawl 248.

The arm 256 is pivoted on stud 222 and has an elongated slot 260 formed therein. The upper portion of this slot is arcuate with the stud I as its center, while the lower portion is straight. The bracket E92 attached to the stem I88 of key T has a stud 263 projecting into the slot 260. The arm 25B is therefore not moved when the key T is swung forwardly, as shown in Fig. 4, but is pivoted counterclockwise when the key T is swung rearwardly to the position in which it is shown in Fig. 5.

Since the lower end of the arm 256 prevents engagement of the wipe pawl 248 with the roller stud 241, the rocker plate 240 is not moved on the return stroke and the accumulator pinions remain enmeshed with the segmental gears and are returned to their initial positions, retaining the total.

The right-hand accumulator arm #0 has a stud 262 projecting therefrom through a suitable opening in the frame plate, and this stud is adapted to be engaged by a detent bell crank 264 havin a pair of V notches 265 and 266. The forwardly and downwardly extending arm of the ball crank lever carries a roller 260 which is adapted to engage a cam plate 210 which is riveted to the plate H2 (Fig. 6). By virtue of the interference provided by the plate 210, the bell crank detent 264 is prevented from moving and the accumulator pinions are thereby locked in or out of mesh during that portion of the operating cycle in which the cam 2T0 lies beneath the roller 268.

A suitably anchored tension spring 272 tends to move the detent bell crank 264 clockwise so as resiliently to hold the V notch 265 or 266 thereof in engagement with the stud 262.

Referring to Figs. 4 and 5, the key T is biased to move to its intermediate normal position by a suitably anchored tension spring 224. The stud 263 attached to the total key bracket I92 projects through a suitable opening in the side frame plate and into a radial elongated slot 216 (Fig. 3) formed in a signal printing sector 2E8 having a type bar 230 secured thereto, this bar having a type T 282 and a type S 222 thereon. As will be apparent from Figs. 4 and 5, when the key T is swung forwardly, it brings the type 262 in printing position, whereas when the total key is swung rearwardly for a subtotal operation, it brings the type S 233 in printing position.

Whenever the key T is moved to total or subtatal taking position, it swings the operating arm 220 counterclockwise about its pivot 222 by virtue of the operating connection of the stud 230 in the The arm 220 has a projection 284 which engages the key release bail bar I16 when the arm 22B is swung counterclockwise, and pushes the bar I16 forwardly a suflicient distance to engage the ends of the key latching bars Zfil and the ends of the actuator release bars 22, mOVing them forwardly, thereby releasing any depressed numeral keys l and rel-easing all the ac tuator slides, so that they may move rearwardly in the total and subtotal taking operations. The key '1 may therefore be used as an error key.

A bail comprising an arm 286 (Fig. 2) pivoted on stud I48, an arm 288 (Fig. 7) pivoted on the stud H48, and a toothed cross bar 296, is normally held in the position shown in Fig. 7 by a stud 232 on the key lock plate H96. When, as previously described, the lock plate swings clockwise, the stud 292 moves to a position beneath a rounded notch 294 in the arm 288 to permit the bail 288, 290 to be swung downwardly by its tension spring 2% thereby permitting the teeth on the lower edge of the cross bar to engage the forward edges of sidewardly extending lugs 298 formed at the ends of the latching bars 20. The key latching bars 20 being thus locked in their rearward positions, all of the numeral keys lil are locked against depression.

Referring to Fig. 5, it will be noted that the downwardly projecting arm of the operating plate 220 is connected by a pivoted link 300 with an arm 302 secured to a shaft 304. As shown in Fig. 1, the shaft 304 has a flattened portion upon which a latch 3G6 rests, the latch being pivoted on an annularly grooved stud 308. The latch 306 has a hooked end 3| ll which engages behind a sidewardly bent lug 312 formed on the leftmost actuator 36. This actuator is not connected to a stop slide 30 since it is provided to operate only during total and subtotal taking operations. It will be understood that there is one more accumulator pinion, with its operating and printing mechanisms, than there are banks or longitudinal rows of keys to provide for the addition and printing of the units carried over from the highest order numeral key controlled accumulator pinion.

Means are provided to prevent printing of the zeros in the denominational order-s higher than that of the highest significant figure in the total. This means comprises a hook 3I8 (Figs. 1, 4, and

5) for each type segment 50 being adapted to engage a lug 32!! extending sidewardly from the type segment. The hooks 318 are pivoted on a rod and are carried in a frame also pivoted on the rod 322, comprising end plates 324 and 325 which are joined by combs 326 and 32'! and a cross bar 328, the combs serving as guides and locators for the hooks EH8. The hooks are biased to swing counterclockwise by tension springs 330, and each hook has an offset forwardly extending arm 332, the extremity of which is adapted to enter the notch i! in the disc 66 of such accumulator pinion assemblies as are in zero position.

Each of the arms 332 has a sidewardly bent ear 334 which extends beneath the arm 332 of the next adjacent lower denominational order. This elimination of zero printing is to be effected only during total and subtotal operating cycles, and the frame comprising the plates 324 and and its connecting combs and bars is operated so as to swing the hooks 3|8 out of the path of the lugs 320 during adding operations. This is accomplished by means of a stud 336 projecting sidewardly from the frame plate 325 and through a slot 338 formed in the rear- 8 wardly projecting portion of the actuator arm 220.

It will therefore be seen that when the key T is swung either forwardly or rearwardly for a. totaling or subtotaling operation, the frame comprising the plates 324 and 325 and connecting combs is swung counterclockwise so as to bring the hooks 3 [8 into operative position.

While I have shown and described a preferred embodiment of my invention, it will be apparent that numerous variations and modifications thereof may be made without departing from the underlying principles of the invention. I therefore desire, by the following claims, to include within the scope of the invention all such variations and modifications by which substantially the result-s of my invention may be obtained through the use of substantially the same or equivalent means.

I claim:

1. In a calculating machine having a key board, differentially movable actuators controllable by amounts set up in the key board, an accumulator comprising pinions engageable with the actuators, operating mechanism including a double acting wipe pawl to cause engagement and disengagement of the accumulator and the actuators, and a main operating shaft having a forward and a return stroke; the combination of a pivoted key movable in one direction from its normal position to cause the operating mechanism to effect a total taking operation and movable in the opposite direction to cause the mechanism to effect a subtotal taking operation, resilient means holding the key in its normal position, an element forming an operating connection between the key and the operating mechanism, a connection between the key and the element to cause the element to move in the same direction when the key is moved in either direction from its normal position thereby to cause the operating mechanism to be positioned for engaging the accumulators and actuators during the forward stroke of the main shaft and disengaging the accumulator from the actuators on the return stroke thereof, and an arm operatively connected to the total key and moved thereby only when the key is moved to subtotal taking position to interfere with the operation of the wipe pawl during the return stroke of the main shaft to prevent the operating mechanism from disengaging the accumulator from the actuator.

2. In a calculating machin having a key board, differentially movable actuators controllable by amount-s set up in the key board, an accumulator comprising pinions engageable with the actua tors, operating mechanism including a double acting wipe pawl to cause engagement and disengagement of the accumulator and the actuators, and a main operating shaft having a forward and a return stroke; the combination of a pivoted key including a stem having two adjacent projections and movable in one direction from its normal position to cause the operating mechanism to effect a total taking operation and movable in the opposite direction to cause the mechanism to effect a subtotal taking operation, resilient means holding the key in its normal position, an element forming an operating connection between the key and the operating mechanism, a connection between the key and the element to cause the element to move in the same direction when the key is moved in either direction from its normal position thereby to cause the operating mechanism to be positioned for engaging the accumulators and actuators during the forward stroke of the main shaft and disengaging the accumulator from the actuators on the return stroke thereof, an arm operatively connected to the total key and moved thereby only when the key is moved to subtotal taking position to interfere with the operation of the wipe pawl during the return stroke of the main shaft to prevent the operating mechanism from disengaging the accumulator from the actuator, and means connected to the main shaft and operated throughout the major portions of the forward and return stroke thereof to engage between or at opposite sides of the projections on the key stem and thereby lock the key against movement.

3. In a calculating machine having a key board, differentially movable actuators controllable by amounts set up in the key board, an accumulator comprising pinions engageable with the actuators, operating mechanism including a double acting wipe pawl to cause engagement and disengagement of the accumulator and actuators, and a main operating shaft having a forward and a return stroke; the combination of a pivoted key including a stem having a V-shaped slot and movable in one direction from its normal position to cause the operating mechanism to effect a total taking operation and movable in the opposite direction to cause the mechanism to effect a subtotal taking operation, resilient means holding the key in its normal position, an element having a pin embraced in the V-shaped slot forming an operating connection between the key and the operating mechanism, said pin and V slot connection causing the element to move in the same 10 direction when the key is moved in either direction from its normal position thereby to cause the operating mechanism to be positioned for engaging the accumulators and actuators during the forward stroke of the main shaft and disengaging the accumulator from the actuators on the return stroke thereof, and an arm operatively connected to the total key and moved thereby only when the key is moved to subtotal taking position to interfere with the operation of the wipe pawl during the return stroke of the main shaft to prevent the operating mechanism from disengaging the accumulator from the actuator.

THOMAS O. MEHAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 851,089 Hinchman Apr. 23, 1907 968,004 Vincent Aug. 23, 1910 1,208,190 Monro Dec. 12, 1916 1,296,380 Fuhrmann et a1. Mar. 4, 1919 1,305,124 Kuentzler May 27, 1919 1,318,798 Quentell Oct, 14, 1919 1,386,021 Peters Aug. 2, 1921 1,432,616 Phinney Oct. 17, 1922 1,706,726 Brand Mar. 26, 1929 1,915,296 Crosman June 27, 1933 2,052,905 Sturm Sept. 1, 1936 2,055,522 Dicke Sept. 29, 1936 2059, 158 Hosack Nov. 3, 1936 2,091,728 Clark Aug. 31, 1937 2,091,778 Garbell Aug. 31, 1937 2,263,818 Payne Nov. 25, 1941 

